Fixed xml3d scene controller to work with multiple xml3d elements in a single document.
Fixed xml3d scene controller to work with multiple xml3d elements in a single document.

Search for an active view is now performed only in a xml3d element with a controller
and not in a whole document.

xml3d/xml3d.js,xml3d/xml3d.js,ariyapour/xml3d.js,CCLDESTY/xml3d.js,ariyapour/xml3d.js,Fiware/webui.Xml3d.js,Fiware/webui.Xml3d.js,CCLDESTY/xml3d.js